Cardboard-box knife



June'l 1926.

F. L.. BLEVIN ET AL GARDBOARD BOX KNIFE Filed Ju`1y 18, 1924 INVENTORv 'edericlevin and ndrew R lbf' M5012 BY am ATTORNEY Patented June 1, 1926.

UNITEDv STATES VvPri'rrzla'r i erstes.

FREDERICK L. BLEvIN, or JERSEY' CITY, NEW JERSEY, AND `ANDREW D. FERGUSON.

' or BROOKLYN, NEW YORK.

eARDBoARD-Rox KNIFE.

Application ined Jury 1s, 1924. serial No. 726,766.

This invention relates to a cardboard box knife andthe method of cuttingv a sheet of material. j

The object of the invention is the productionof a knife, with which the walls of a box can'be cut Without injuring the contents thereof. A second object is the production of a knife, which can be adjusted to cut through different thicknesses of material to a prec etermined depth, so that the cutting edge of the blade of the knife or its peak will not protrude throughsaid material and injure objects below the same. vA third object of the invention is the production of a knife which is particularly adapted kto cut the f walls of cardboard boxeswithout injury to their contents.

j The organization of the invention comprises a knife witha perforating wheel. To the shank of the knife is adjustably attached a bracket, with a pair of guide rollers. The knife when in operative position is inclined to the face of the cardboard or Vother mate-` rial operated upon, and the bracketcOnnected thereto can be moved up and down lthereon to locate its guide rollersI atdifferent levels with respect tothe apex fof the cutting blade thereof and the axis of the perforating wheel. l f

In the accompanying drawings Fig. 1 shows a side view of the knife in operative position on a piece of cardboard; Fig. 2 represents a partial left hand side view of Fig. 1; Fig. 3 indicates a top plan view of Fig. 1; Fig. 4 represents a section of Fig. 1 on the line 4, 4; Fig. 5 shows a section of Fig. 1 on the line 5, 5 and Fig. 6 represents a View similar to Fig. 3 with a modification. The knife comprises the shank 2O which has formed at one end thereof the cutting blade 21 having the euttingedge 22 with the peak 23. The blade 21 is bent laterally to locate the cutting edge 22 with its peak slightly spaced from the face 24 of the shank 20. The other face of the said shank has formed thereon serrations 25 throughout its length', which are preferably at right angles to the longitudinal axis of the shank. The cutting blade 22 and peak 23 are spaced from said face 24 to bring them in linewith the heel to be described.

A pair of elongated openings 30 and 31 are formed in the shank 20, and a handle 32 extends from the end thereof, opposite the .Getting blade 21,. A 111g 33 extends from the lower edge of the shank 20. A pivot 34 is supported in the lug 33 and has journaled thereon the perforating wheel 35.r

A bracket has formed at the ends of one face thereof the serrations 41 and 42 and has extending therefrom the journal lug 44. A journal pivot 45 extends from the lug 44 and has journaled thereon the guide roller 4b. A

journal pivot 47 extends from the frontend of the bracket 40 and has journaled thereon the guide roller 48.

The bracket 40 is adjustably clamped to the .shank 20, by means of the screws49 and 50, which respectively extend through the elongated openings 30 and 31 and are in threaded engagement with said bracket. TheV serrations 41 and y42 of the bracket 40 are detaehably locked to the serrations 25 of the shank 20. The screws 49 and 50 prevent the separation of the bracket 40 and the sha-nk 2O and the serrations of the bracket and shank prevent any longitudinal movements ofl said elements when clamped to each other.

In Fig. 6 the shank of the knife is again indicated at 2O with the serrations 25 and 'the handle 32. The perforating wheel 35 is again journaled on the pivot 34.y yIn place of the bracket 40 there is indicated the bracket 40T, which has formed therewith the serraf tions throughout its whole length, which are detachably locked to the serrations 25. The screws 49 and 50, detachably clamp the bracket 40a to the shank 20. The openings 30 and 31 again serve for the screws 49 and 50,- and the journal pivots 45 and 47 have recutting edge 22 of the cutting blade 21 cuts the material as vshown at 62 which is left befy tween said perforations and follows the line thereof. The guide rollers 46 and 48 maintain the peak 23 of the cutting blade and the periphery of the perforating wheel 35 at the proper depth below the top face J of the material 60k operated upon. If it is desired to vary the depth of the cut made by the knifey and the depth of the perforations made by the pertoratingf Wheel 35, the user unserews the screws i9 and 50 and disengages the bracket 40 or 40 from the shank 20, and mores the bracket upwardly it a deeper cut is lo be inade with the knife vand deeper pertorations by the Wheel 85, or downwardly iii' a cut and perforations ot less depth are to be iliade'. The screws 419 and 50 are then again screwed in place to fasten the bracket #i0 or i0@ to the shank 20. lt Will be noted that to Vary the depth of the cut or perforations that the distance between the ares ot the rollers d6. 45S and the axis ot the. wheel 35 and peak 23 inust be Varied.

`Various modifications may be inade in the in rcntion. and the presentexeinpliiication is to be taken as illustrative' and not limitative thereof.

Haring described our invention' what We desire to secure by Letters Patent and claiin is:-

i. lin a knife of the character described the combination ot a knife blade to cut a niaterial operated upon and a pertorating Wheel. coacting with the kniteblade to insert a line of perforations in said material and ineans to siniultaneouslif' vary the depth of the cut made with the knife blade and the depth ot'k the perioiations ina-.de with the pertorating Wheel.

In' a knifte ot the character described the conibination' ot' a knife comprising" a shank and a cutting' blade, a' perfor-atingY wheel for the shank and j ournaled below the saine. a bracket detachably clamped to said shank and Iguide rollers journaled to said: bracket. l

In a knife of the character described the coi'nbination of a shank and a cutting blade,v a perltorating Wheel for the shank and journaled below the saine, a bracket detaonablfyv clamped to said shank and constructed to clamp the said shank in different positions thereon and guide rollers journaled to said bracket.

l. ln a kni'te oi" the character described the combination oi a shank With a cutting` blade, said shank having` an opening and serrations in one of the faces thereof, a per- 'lforating Wheel tor the shank and journaled below the saine, a. bracket With serrations in one. of the faces thereof adapted to lock with the serrations ot said shank, said bracket adapted to be located in differentpositions on said shank, a screw ez-tending,l through the opening in said shank and engaging a threaded opening` in said bracket and a pair oit `guide rollers for said bracket.

5. in a knife ot the `character described the combination of a shank With a cutting blade and pair of elongated openings and haring sei-rations in one of the 'tacos thereof, said shank haviiig` av journal lne' ef-:ttndingl therefrom, a pertoratingi; Wheel journaled to yaid lng, a bracket with' serrations in one o't he faces thereof adapted to lock with the serre-.tions of said shank, said bracket adapted to be located in' different positions on said shank, a pair o1" screws extending' through the openings in said shank anden- ,glaring threaded openings in said bracket and pair oi guide rollers for said bracket. Signed at the borough of Manhattan. citiv ot New York inv the county of New York and State of' New York this 3d day of July A1. D. 1924.

FREDERICK L. BLEVIN. ANDREW D. FERGUSON. 

